Accessibility conditions of MIMO nonlinear control systems on homogeneous time scalesBartosiewicz, Zbigniew; Kotta, Ülle; Tõnso, Maris; Wyrwas, MałgorzataMathematical control and related fields2016 / p. 217-250 https://doi.org/10.3934/mcrf.2016002

Acessibility conditions for discrete time nonlinear multiinput multioutput systemsKotta, Ülle; Tõnso, Maris5th Junior European Meeting on Control & Information Technology : September 20-22, 2006, Tallinn, Estonia : book of abstracts2006 / p. 25

Adjoint polynomial formulas for nonlinear state-space realizationBelikov, Juri; Kotta, Ülle; Tõnso, MarisIEEE transactions on automatic control2014 / p. 256-261

Algebraic formalism of differential p-forms and vector fields for nonlinear control systems on homogeneous time scalesBartosiewicz, Zbigniew; Kotta, Ülle; Pawluszewicz, Ewa; Tõnso, Maris; Wyrwas, MałgorzataProceedings of the Estonian Academy of Sciences2013 / p. 215-226

Comparison of LPV and nonlinear system theory : a realization problemBelikov, Juri; Kotta, Ülle; Tõnso, MarisSystems & control letters2014 / p. 72-78

Computer algebra tools for modelling, analysis and synthesis for nonlinear control systems = Arvutialgebra vahendid mittelineaarsete juhtimissüsteemide modelleerimiseks, analüüsiks ja sünteesiksTõnso, Maris2010 https://www.ester.ee/record=b2552427*est

Effective algebraic analysis approach to linear systems over Ore algebrasCluzeau, T.; Koutschan, C.; Quadrat, A.; Tõnso, MarisAlgebraic and symbolic computation methods in dynamical systems2020 / p. 3-52 https://doi.org/10.1007/978-3-030-38356-5_1

Feedback linearization and lattice theoryKotta, Ülle; Tõnso, Maris; Shumsky, Alexey Ye.; Zhirabok, Alexey N.Systems & control letters2013 / p. 248-255

Feedback linearization of an active magnetic bearing system operated with a zero-bias fluxMystkowski, Arkadiusz; Kaparin, Vadim; Kotta, Ülle; Pawluszewicz, Ewa; Tõnso, MarisInternational journal of applied mathematics and computer science2017 / p. 539-548 : ill https://doi.org/10.1515/amcs-2017-0038

Functions' algebra in nonlinear control : computational aspects and softwareBelikov, Juri; Kaldmäe, Arvo; Kaparin, Vadim; Kotta, Ülle; Shumsky, Alexey Ye.; Tõnso, Maris; Zhirabok, AlexeyProceedings of the Estonian Academy of Sciences2017 / p. 89-107 https://doi.org/10.3176/proc.2017.1.06 http://www.ester.ee/record=b2355998*est

Minimal realizations of nonlinear systemsKotta, Ülle; Moog, Claude; Tõnso, MarisAutomatica2018 / p. 207-212 https://doi.org/10.1016/j.automatica.2018.05.007 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Nabla derivatives associated with nonlinear control systems on homogeneous time scalesBartosiewicz, Zbigniew; Kotta, Ülle; Mullari, Tanel; Tõnso, Maris; Pawluszewicz, Ewa; Wyrwas, MałgorzataNonlinear analysis : modelling and control2016 / p. 547-563 http://dx.doi.org/10.15388/NA.2016.4.8

NLControl - a mathematica package for nonlinear control systemsKotta, Ülle; Tõnso, MarisIFAC-PapersOnLine2017 / p. 681-686 https://doi.org/10.1016/j.ifacol.2017.08.122

On accessibility conditions for state space nonlinear control systems on homogeneous time scalesBartosiewicz, Zbigniew; Kotta, Ülle; Mullari, Tanel; Tõnso, Maris; Wyrwas, MałgorzataSystems & control letters2016 / p. 8-13 http://dx.doi.org/10.1016/j.sysconle.2016.09.018

On the transformation of a nonlinear discrete-time input-output system into the strong row-reduced formBartosiewicz, Zbigniew; Belikov, Juri; Kotta, Ülle; Tõnso, Maris; Wyrwas, MałgorzataProceedings of the Estonian Academy of Sciences2016 / p. 220-236 http://dx.doi.org/10.3176/proc.2016.3.02

Polynomial accessibility condition for the multi-input multi-output nonlinear control systemKotta, Ülle; Tõnso, Maris; Kawano, YuProceedings of the Estonian Academy of Sciences2014 / p. 136-150 https://artiklid.elnet.ee/record=b2673962*est

Realisation of linear time-varying systemsKotta, Ülle; Tõnso, MarisInternational journal of control2017 / p. 1951-1956 https://doi.org/10.1080/00207179.2016.1230891

Realization of discrete-time nonlinear input-output equations : polynomial approachKotta, Ülle; Tõnso, MarisAutomatica2012 / p. 255-262 https://www.sciencedirect.com/science/article/pii/S0005109811005413

Realization of nonlinear input-output equations using polynomial approach : preliminary ideasKotta, Ülle; Tõnso, MarisInfo- ja kommunikatsioonitehnoloogia doktorikooli IKTDK kolmanda aastakonverentsi artiklite kogumik : 25.-26. aprill 2008, Voore külalistemaja2008 / p. 21-24

Realization of nonlinear MIMO system on homogeneous time scalesBelikov, Juri; Kotta, Ülle; Tõnso, MarisEuropean journal of control2015 / p. 48-54 http://dx.doi.org/10.1016/j.ejcon.2015.01.006

Realization of nonlinear time-delay input–output equationsKaldmäe, Arvo; Kotta, Ülle; Tõnso, MarisIEEE Control Systems Letters2018 / p. 369-374 https://doi.org/10.1109/LCSYS.2018.2838456 Journal metrics at Scopus Article at Scopus

Relaxing realizability conditions for discrete-time nonlinear systemsKotta, Ülle; Schlahter, Kurt; Tõnso, MarisAutomatica2015 / p. 67-71 http://dx.doi.org/10.1016/j.automatica.2015.05.007

Remarks on the realization of time-varying systemsKotta, Ülle; Moog, Claude; Tõnso, MarisProceedings of the Estonian Academy of Sciences2018 / p. 208-216 http://www.kirj.ee/public/proceedings_pdf/2018/issue_3/proc-2018-3-207-216.pdf https://doi.org/10.3176/proc.2018.3.02 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

Removing the input derivatives in the generalized bilinear state equationsMullari, Tanel; Kotta, Ülle; Kotta, Palle; Tõnso, Maris; Zinober, AlanProceedings of the Estonian Academy of Sciences2009 / 2, p. 98-107 https://citeseerx.ist.psu.edu/document?repid=rep1&type=pdf&doi=b053956e3600449843044b1022ebefc6d5d19df8

State-space realization of nonlinear control systems : unification and extension via pseudo-linear algebraBelikov, Juri; Kotta, Ülle; Tõnso, MarisKybernetika2012 / p. 1100-1113 https://www.researchgate.net/publication/269024076_State-space_realization_of_nonlinear_control_systems_Unification_and_extension_via_pseudo-linear_algebra

Static state feedback linearizability : relationship between two methodsMullari, Tanel; Kotta, Ülle; Tõnso, MarisProceedings of the Estonian Academy of Sciences2011 / 2, p. 121-135 https://artiklid.elnet.ee/record=b2413961*est

Static state feedback linearization of nonlinear control systems on homogeneous time scalesBartosiewicz, Zbigniew; Kotta, Ülle; Tõnso, Maris; Wyrwas, MałgorzataMathematics of control, signals, and systems2015 / p. 523-550 http://dx.doi.org/10.1007/s00498-015-0150-5

The connection between different static state feedback linearizability conditions of discrete time nonlinear control systemsMullari, Tanel; Kotta, Ülle; Tõnso, MarisProceedings of the European Control Conference 2007, Kos, Greece, July 2-5, 20072007 / p. 4268−4275 http://ieeexplore.ieee.org/document/7068444/

The strong Popov form of nonlinear input–output equationsBartosiewicz, Zbigniew; Pawluszewicz, Ewa; Wyrwas, Małgorzata; Kotta, Ülle; Tõnso, MarisProceedings of the Estonian Academy of Sciences2018 / p. 193–206 https://doi.org/10.3176/proc.2018.3.01 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS

WebMathematica-based tools for discrete-time nonlinear control systemsTõnso, Maris; Rennik, Heli; Kotta, ÜlleProceedings of the Estonian Academy of Sciences2009 / 4, p. 224-240